My car seems to be running a hell of a lot better since the 3G alt conversion. But i have a lot of mods that run air, and i dont think any that give more fuel. although my car runs well, u think i should check of im running lean or just not worry about it.
you should start tossing a lean code and/or having exceeded the adaptive capability of the puter (resulting lean condition), if you are running out of injector or way out of stoich (lean).